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Colunga GB Arriaga-Jordán CM Veláquez Beltran L González-Ronquillo M Smith DG Estrada-Flores J Rayas-Amor A Castelán-Ortega OA 《Tropical animal health and production》2005,37(Z1):143-157
The aim of this work was to describe the feeding strategies for donkeys used by peasant farmers in central Mexico. Feeding strategies for the dry and wet seasons are described, as well as the nutritional characteristics of the main forages and supplements used by the farmers. The extent to which the feeding practices used by farmers matched the digestible energy and crude protein requirements of donkeys for maintenance and work was determined. It was concluded that grazing on native grassland could provide enough energy and protein for donkeys at maintenance level and for those performing only a moderate amount of work. More research in required in order to have better estimates of intake and plant species preferred by donkeys under prevailing grazing conditions. 相似文献
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Sainz-Sánchez Pedro Alan López-González Felipe Estrada-Flores Julieta Gertrudis Martínez-García Carlos Galdino Arriaga-Jordán Carlos Manuel 《Tropical animal health and production》2017,49(1):179-186
Tropical Animal Health and Production - The use and management of native grassland for dairy production during the rainy season was studied on two small-scale dairy farms in the highlands of... 相似文献
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Pedraza-Beltrán P Estrada-Flores JG Martínez-Campos AR Estrada-López I Rayas-Amor AA Yong-Angel G Figueroa-Medina M Nova FA Castelán-Ortega OA 《Tropical animal health and production》2012,44(2):329-336
Tropical grasses are the primary nutrient resource for cattle production in the tropics, and they provide low-cost nutrients
to cattle. However, its production is constrained by seasonal changes and quality; hence, appropriate usage of relatively
inexpensive agricultural by-products is important to profitable livestock production. The objective of the study was to evaluate
the effect of supplementing coffee pulp to dairy cows grazing tropical grasses on milk yield and forage intake. Four multiparous
crossed Holstein–Brown Swiss–Zebu cows of similar weight and milk yield were used. The effect of 10%, 15% and 20% inclusion
of coffee pulp in dairy concentrates on milk yield and forage intake was analysed using a 4 × 4 Latin square design. Results
showed that there were no significant effects (P > 0.05) in grass dry matter intake, milk yield, milk composition body weight and body condition score due to the inclusion
of coffee pulp in the dairy concentrates. It is concluded that coffee pulp can be included at levels of 20% in the concentrate
without compromising significantly (P > 0.05) milk yield, milk composition and grass dry matter intake. It also was concluded that cost of concentrate is reduced
in 20% by the inclusion of coffee pulp. 相似文献
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Limón-Hernández Daniel Rayas-Amor Adolfo Armando García-Martínez Anastacio Estrada-Flores Julieta Gertrudis López Mayra Núñez Cruz Monterrosa Rosy G. Morales-Almaráz Ernesto 《Tropical animal health and production》2019,51(6):1579-1584
The objective of this study was to investigate the effect of four levels of molasses on chemical composition, in vitro digestibility, methane production and fatty acid profile of canola silages. A canola (Brassica napus var. Monty) crop was established in a small-scale agricultural farm and harvested 148 days after sowing. Four levels of molasses were tested with respect to the fresh weight (1.5 kg); these were 1% (CS-1), 2% (CS-2), 3% (CS-3) and 4% (CS-4) molasses, and 0% molasses (CS-0) was included as a control. A total of 45 microsilages were prepared using PVC pipes (4 in. of diameter × 20 cm of length), and the forage was compressed using a manual press. The effects of control and treatments were tested using the general linear model Y?=?μ?+?Ti?+?Eij. The linolenic acid (C18:3n3), palmitic acid (C16:0) and linoleic acid methyl ester (C18:2n6c) accounted for 30%, 21% and 10.5% of total fatty acids, respectively; the fermentation parameters and in vitro methane production were not affected (P?>?0.05) by treatments; in vitro digestibility decreased significantly (P?<?0.05) as the level of molasses increased. It was concluded that CS-4 improved the DM content by 9% and showed high content of linolenic acid methyl ester. The gross energy of canola silages could favour the oleic acid methyl ester.
相似文献8.
Victor Andrés Burbano-Muñoz Felipe López-González Julieta Gertrudis Estrada-Flores Pedro Alan Sainz-Sánchez 《African Journal of Range and Forage Science》2018,35(1):63-70
The objective was to evaluate the provision of oat silage (Avena sativa) to supplement grazing dairy cows on pastures of perennial ryegrass (Lolium perenne), festulolium (Lolium multiflorum × Festuca pratense) and white clover (Trifolium repens) during the dry season when pasture growth is limited. The experimental design was a 3 × 3 Latin square replicated three times, with nine milking Holstein cows (mean live weight 496.2 ± 33.6 kg and daily milk yield 14.8 ± 2.8 kg cow?1) under on-farm participatory rural research. Experimental periods were 14 d. Simulated grazing samples of pasture herbage were analysed for chemical composition, sward height recorded and net herbage accumulation determined from exclusion cages. Treatments were the inclusion of oat silage at T0 = 0 kg DM cow?1 d?1 of oat silage, T3 = 3 kg DM cow?1 d?1 of oat silage, and T6 = 6 kg DM cow?1 d?1 of oat silage, plus 5.0 kg fresh weight commercial concentrate and 9 h of continuous grazing. Animal variables were milk yield and composition, live weight and body condition score. Feeding costs were calculated. Mean milk yield was 18.9 ± 0.27 kg cow?1 d?1 with no differences in animal variables (p > 0.05), but feeding costs per kilogram milk increased 25% for T3 and 50% for T6. Oat silage supplementation is only viable under difficult grazing conditions. 相似文献
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Colunga G. B. Arriaga-Jord&#;n C. M. Vel&#;quez Beltran L. Gonz&#;lez-Ronquillo M. Smith D. G. Estrada-Flores J. Rayas-Amor A. Castel&#;n-Ortega O. A. 《Tropical animal health and production》2005,37(1):143-157
The aim of this work was to describe the feeding strategies for donkeys used by peasant farmers in central México. Feeding strategies for the dry and wet seasons are described, as well as the nutritional characteristics of the main forages and supplements used by the farmers. The extent to which the feeding practices used by farmers matched the digestible energy and crude protein requirements of donkeys for maintenance and work was determined. It was concluded that grazing on native grassland could provide enough energy and protein for donkeys at maintenance level and for those performing only a moderate amount of work. More research in required in order to have better estimates of intake and plant species preferred by donkeys under prevailing grazing conditions. 相似文献
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