Production and marginal analysis of lactating cows subjected to dietary cation-anion balances
نویسندگان
چکیده
The objective of this study was to evaluate productive, nutritional, and economic traits in lactating cows on pasture fed diets with different cation-anion balances (DCAB). Ten ¾ Holstein × ¼ Dairy Gyr the middle third lactation, at an average age 70 ± 4.6 months body weight 400 55.2 kg, were distributed into five treatments a 5 Latin square experimental design two simultaneous squares. Treatments consisted DCAB +237, +258, +294, +347, or +419 mEq dry matter (DM). No effects intake observed. There no significant effect milk yield. protein content not influenced by DCAB. Body condition score significantly affected apparent digestibilities nutrients (crude protein, neutral detergent fiber, ether extract, non-fibrous carbohydrates, total digestible nutrients) Marginal rate return did show differences. Under good conditions pasture, forage availability, quality associated lactation phases cows, all efficient production, intake, digestibility. However, terms, most attractive +237 kg-1 DM.
منابع مشابه
Enfluence of increasing dietary cation-anion balance on the performance of lactating dairy cattle
متن کامل
Formulating Diets with Optimum Cation-Anion Difference for Lactating Dairy Cows
Dietary cation-anion difference (DCAD) has been a topic of considerable research in dairy cows nutrition for the last 2 decades (NRC, 2001). Much of the early work addressed effects of DCAD on periparturient Ca metabolism and metabolic health of transition dairy cows (NRC, 2001; Block, 1994). Over roughly the same period time, some but less research focused on the effects of DCAD on lactational...
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چکیده ندارد.
15 صفحه اولeffect of dietary cation-anion difference on acid- base balance, calcium homeostasis and performance of holstein dairy cows
this study was conducted on 24 holstein cows in close-up period, in a split-plot in time design, with a 2×2 factoriel arrangement and in a completely randomized framework to evaluate the effect of pre and postpartum dietary cation-anion differences (dcad) on homeostasis of calcium, acid-base balance and the subsequent lactation performance. the first factor was prepartum dcad for which the anim...
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ژورنال
عنوان ژورنال: Acta Scientiarum. Animal Sciences
سال: 2021
ISSN: ['1806-2636', '1807-8672']
DOI: https://doi.org/10.4025/actascianimsci.v43i1.52698