Effect of mature size and body condition of Nelore females on the reproductive performance

Lacerda, Viviane; Campos, Gabriel Soares; Roso, Vanerlei Mozaquatro; Souza, Fernanda Fernandes; Brauner, Cássio Cassal; Boligon, Arione Augusti

doi:10.1016/j.theriogenology.2018.05.036

Cited by 21 publications

(12 citation statements)

References 33 publications

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“…In Zebu cattle, traits related to female sexual precocity are economically important, because they provide the larger disponibility of animals in the herds which leads to a greater profitability for the production sector (Santana et al, 2012). Traits such as age at first calving (AFC) and calving interval (CI) are parameters used in evaluation of reproductive efficiency (RE) of females bovine (Lacerda et al, 2018). The onset of reproductive activity is indicated by puberty which is dependent of several factors such as race, environmental, food availability, and body weight.…”

Section: Introductionmentioning

confidence: 99%

Polymorphisms Related to Bovine Leptin Gene and Association with Productive and Reproductive Traits in Nellore Heifers

Fernandes¹,

Crispim²,

Seno³

et al. 2020

Trop. Anim. Sci. J.

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The identification of genes and polymorphisms in female zebu related to the leptin gene that may be involved in better productive and reproductive performances is relevant to the livestock and economic sector. Thus, the objective of this study was to evaluate the SNP markers (T954M and C305T) and the BM1500 microsatellite and to analyze their associations with the traits of body weight, age at first calving (AFC), calving interval (CI), and reproductive efficiency (RE) in Nellore heifers. DNA extraction was performed, followed by the amplification of all markers. Association analyses were carried out with each marker and each traits separately. The result showed that no significant association was found between the reproductive traits and all markers and between body weight and both SNP markers. For the BM1500 microsatellite, the effect of the allele 138 (p=0.0383) on body weight was observed, with the growth curve for this allele being related to the lower asymptotic weight. Therefore, the BM1500 microsatellite marker was the only one with a significant association with a productive trait providing information about the condition of body weight in Nellore heifers.

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Section: Introductionmentioning

confidence: 99%

Polymorphisms Related to Bovine Leptin Gene and Association with Productive and Reproductive Traits in Nellore Heifers

Fernandes¹,

Crispim²,

Seno³

et al. 2020

Trop. Anim. Sci. J.

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“…(2018); and positive (0.23) by Lacerda et al. (2018)]. Most of the previous studies found a negative correlation of AFC with MWT and body weight of cows, while a few studies reported a null or positive correlation.…”

Section: Resultsmentioning

confidence: 92%

“…The heritability of AFC estimated in our study (0.07) was similar to that reported in previous studies. However, Oyama et al (2002), Oyama et al (2004) (Boligon & Albuquerque, 2011;Buzanskas et al, 2010;Lacerda et al, 2018;Schmidt et al, 2018).…”

Section: Heritabilitymentioning

confidence: 99%

“…In fact, Roughsedge et al (2005) reported various heritability estimates for AFC across different breeds (0.05 in South Devon, 0.17 in Simmental, 0.22 in Aberdeen Angus, and 0.26 in Limousin). In addition, heritability estimates for AFC ranging from 0.04 to 0.17 have been reported in Nelore cattle (Boligon & Albuquerque, 2011;Buzanskas et al, 2010;Lacerda et al, 2018;Schmidt et al, 2018).…”

Section: Heritabilitymentioning

confidence: 99%

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Genetic associations between reproductive traits for first calving and growth curve characteristics of Japanese Black cattle

Inoue

Hosono

Oyama

et al. 2020

Animal Science Journal

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The objective of this study was to estimate genetic parameters for first calving reproductive traits and growth curve characteristics in Japanese Black cattle. The Gompertz growth function was fitted to body weight-age data to obtain the mature weight (MWT) and rate of maturing (ROM) of cows. Data of reproductive traits including the first service conception rate (CR) for heifers, age at the first calving (AFC), and gestation length for the first calving were collected. Records of 3,204 animals were used for analysis. Genetic parameters were estimated using a linear uni-and bivariate animal model. The heritability estimates were moderate (0.29 for ROM) and high (0.57 for MWT) for growth curve parameters and low (0.03-0.11) for reproductive traits. There was a negative genetic correlation between MWT and ROM (−0.26), suggesting that an animal with a faster ROM would show a lower MWT. CR was negatively correlated with MWT (−0.42) but significantly and positively correlated with ROM (0.91). There was a negative genetic correlation between AFC and MWT (−0.49). These results suggest that a heifer with a faster ROM and lower MWT would show a higher CR. Meanwhile, a heifer with a lower MWT would show a higher AFC.

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“…This finding suggests that SUBNUT cows were not able to recover their body fat reserves due to the high energy demand in the last stages of gestation [23]. The discordance between BCS and LW shows that despite that these two variables have a strong relationship, the BCS reflects the body fat reserves of the animal, linked to its metabolic status, whereas LW is mainly linked to the animal dimensions, with a high hereditary component [24]. Furthermore, discordances between LW and BCS are common after calving due to changes in the carcass, digestive tract or visceral adipose tissue weight [25].…”

Section: Discussionmentioning

confidence: 99%

Long-Term Effects of Maternal Subnutrition in Early Pregnancy on Cow-Calf Performance, Immunological and Physiological Profiles during the Next Lactation

Noya

Casasús

Ferrer

et al. 2019

Animals

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Simple SummaryEarly pregnancy is a crucial stage in the fetus development. In this phase, from undifferentiated cells, equal to each other, tissues and organs start to develop. Nutrition and metabolic status of the cow during pregnancy affect the intrauterine environment and the nutrient source for the fetus. Therefore, cow diet during early pregnancy affects the fetus development and could have long-term consequences on the future calf. In this study, we assessed the effects of a poor maternal diet during the first third of gestation on the performance of cows and calves during the next lactation, as well as the effect on the transfer of immunity from cow to calf. We used Parda de Montaña and Pirenaica cow-calf pairs, two Spanish autochthonous beef breeds. We concluded that maternal undernutrition reduced the body fat reserves of cows at calving, which affected most of the cow productive parameters and the colostrum immunoglobulin concentration. Furthermore, poor maternal diet altered the calf development and metabolic status, with reduced size and weight at weaning, especially in the Pirenaica breed, which prioritized the cow maintenance instead of the calf growth.AbstractThis study aimed to evaluate the effects of undernutrition during the first third of gestation on cow-calf performance, immunological and physiological profiles during the next lactation in two cattle breeds. Fifty-three Parda de Montaña (PA) and 32 Pirenaica (PI) cows were inseminated, assigned to one of two diets (CONTROL or SUBNUT; 100% or 65% of their requirements) until day 82 of gestation, and fed 100% of the requirements during gestation and next lactation. Cow and calf performance were assessed during lactation. Colostrum and cow-calf plasma samples were analyzed to assess the passive transfer of immunoglobulins and to characterize energy metabolism. At calving, SUBNUT cows had a lower body condition score, which impaired most of the cow-calf parameters. All cows had considerable weight losses during lactation except for SUBNUT-PI cows. Colostrum immunoglobulin G (IgG) concentration was lower in SUBNUT-PI cows, and milk fat content was higher in SUBNUT cows. SUBNUT calves had lower values of body measurements at weaning, and calves born from SUBNUT-PI dams had lower milk intake and the lowest average daily gain (ADG), which was reflected in their lower plasma insulin-like growth factor-1 (IGF-1) concentration. In conclusion, undernutrition in early gestation in suckler cows had long-term effects on offspring postnatal growth, this physiological evidence being more severe in Pirenaica cow-calf pairs.

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Effect of mature size and body condition of Nelore females on the reproductive performance

Cited by 21 publications

References 33 publications

Polymorphisms Related to Bovine Leptin Gene and Association with Productive and Reproductive Traits in Nellore Heifers

Polymorphisms Related to Bovine Leptin Gene and Association with Productive and Reproductive Traits in Nellore Heifers

Genetic associations between reproductive traits for first calving and growth curve characteristics of Japanese Black cattle

Long-Term Effects of Maternal Subnutrition in Early Pregnancy on Cow-Calf Performance, Immunological and Physiological Profiles during the Next Lactation

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