2020
DOI: 10.1590/0001-3765202020181058
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Abstract: The aim of this study was to evaluate the influence of two sub-periods of the calving season and two cow maturity stages on the efficiency of beef cows and their calves. A total of 159 cow-calf pairs were divided by calving time (early or late) within the calving season and maturity stage (young or adult). Calves were weaned at 42 or 63 days after birth and evaluated until 210 days of age. Cows and calves had their development examined based on their weight and body condition score at calving, at weaning, and … Show more

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Cited by 12 publications
(8 citation statements)
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“…Under conditions of quantitative and qualitative limitations on grazing, these demands are generally not completely met, with the cows using their body reserves (Bohnert et al, 2013) to maintain production, affecting their performance as a result. While the cows are still growing, this may be aggravated by the greater body size of the cows and, consequently, their greater nutritional demand (Farias et al, 2018a), which can influence reproduction (Farias et al, 2018b;Bitencourt et al, 2020), or by the demands of growth competing with and affecting the reproductive performance and productivity of the herds, even when maintained under good nutritional conditions (Castilho et al, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…Under conditions of quantitative and qualitative limitations on grazing, these demands are generally not completely met, with the cows using their body reserves (Bohnert et al, 2013) to maintain production, affecting their performance as a result. While the cows are still growing, this may be aggravated by the greater body size of the cows and, consequently, their greater nutritional demand (Farias et al, 2018a), which can influence reproduction (Farias et al, 2018b;Bitencourt et al, 2020), or by the demands of growth competing with and affecting the reproductive performance and productivity of the herds, even when maintained under good nutritional conditions (Castilho et al, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…There is a positive correlation between the higher body weight gain coinciding with the month calving and the subsequent reproductive performance of cows (3) . However, this higher weight did not result in a higher body condition (P>0.05), which might be due to the subjectivity of the evaluation.…”
Section: Discussionmentioning
confidence: 93%
“…A larger number of days from calving to mating is crucial to increasing pregnancy rates (3) and reducing the number of mounts, given the shorter period of recovery for the ovarian activity and reproductive system of cows (21) . Early calvings, though with a possible lower weight and body condition score of the cows, occurred when the natural pastures were improved, providing better nutritional values.…”
Section: Discussionmentioning
confidence: 99%
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