Effects of pregnancy and feeding level on carcass and meat quality traits of Nellore cows

Duarte, Márcio de Souza; Gionbelli, Mateus Pies; Paulino, Pedro Veiga Rodrigues; Serão, Nick V. L.; Silva, L.H.P.; Mezzomo, Rafael; Dodson, Michael V.; Du, Min; Busboom, J. R.; Guimarães, Simone Eliza Facioni; Filho, S. C. Valadares

doi:10.1016/j.meatsci.2013.01.008

Cited by 10 publications

(5 citation statements)

References 33 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effects of diet and animal type on flavor and juiciness have been assessed in a few studies. Duarte et al [7] have shown, in Nellore cattle, that juiciness and flavor are less affected by the finishing diet and have a negative correlation to growth rate. Finishing diets leading to high fat deposition (and low growth rate), such as a long fattening period with a low energy level diet, may increase juiciness and flavor intensity [8,9].…”

Section: Introductionmentioning

confidence: 99%

Relationships Between Cull Beef Cow Characteristics, Finishing Practices and Meat Quality Traits of Longissimus thoracis and Rectus abdominis

Couvreur

Bec

Micol

et al. 2019

Foods

View full text Add to dashboard Cite

The aim of study was to investigate the relationships between the characteristics of cull beef cows in the Rouge des Prés breed, finishing practices and physicochemical characteristics and sensory traits of Longissimus thoracis (LT) and Rectus abdominis (RA) muscles from 111 cows. On the basis of our surveys, which qualify at cow level the animal characteristics and finishing diet, clusters of cull cows and finishing practices are created and their effects tested on LT and RA meat quality. Old and heavy cows with good suckling ability (95 months, 466 kg and 7.1/10) are characterized by LT with larger fibers, and higher intramuscular fat content and fat-to-muscle ratio. Young and heavy cows with low suckling ability (54 months, 474 kg and 4.4/10) are characterized by LT and RA with lower MyHC IIx and higher MyHC IIa and MyHC I proportions. MyHC IIx and IIa proportions are lower and a* and b* color indices higher when cows are finished on pasture, probably related to grass diet and physical activity. The fat-to-muscle ratio is higher without any effect on the intramuscular fat content when cows are finished over a short period (107 days) with a high level of concentrate (9.7 kg/day). The opposite effect is observed over a long period (142 days) with a low level of concentrate (5.8 kg/day), confirming the interaction effect between finishing duration and amount of energy concentrate on the allotment of adipose tissue deposit.

show abstract

Section: Introductionmentioning

confidence: 99%

Relationships Between Cull Beef Cow Characteristics, Finishing Practices and Meat Quality Traits of Longissimus thoracis and Rectus abdominis

Couvreur

Bec

Micol

et al. 2019

Foods

View full text Add to dashboard Cite

show abstract

“…During the early phase of organogenesis, several animal studies indicated the importance of maternal nutrition for fetal stage-critical events regarding gastrointestinal tract development including expansion, differentiation and vascularization. Fetuses from dams subjected to nutrient restriction during early to mid-gestation have decreased growth of the gastrointestinal tract, including liver (Duarte et al, 2013;Wang et al, 2008). In humans, maternal dietary amino acid supplementation to improve fetal growth has been considered as an option to prevent or treat intrauterine growth restriction, as the specific amino acid transport system can transfer all of the BCAAs (Brown et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Nutritional modulation of mouse and human liver bud growth through a branched-amino acid metabolism

et al. 2017

View full text Add to dashboard Cite

Liver bud progenitors experience a transient amplification during the early organ growth phase, yet the mechanism responsible is not fully understood. Collective evidence highlights the specific requirements in stem cell metabolism for expanding organ progenitors during organogenesis and regeneration. Here, transcriptome analyses show that progenitors of the mouse and human liver bud growth stage specifically express the gene branched chain aminotransferase 1, encoding a known breakdown enzyme of branched-chain amino acids (BCAAs) for energy generation. Global metabolome analysis confirmed the active consumption of BCAAs in the growing liver bud, but not in the later fetal or adult liver. Consistently, maternal dietary restriction of BCAAs during pregnancy significantly abrogated the conceptus liver bud growth capability through a striking defect in hepatic progenitor expansion. Under defined conditions, the supplementation of L-valine specifically among the BCAAs promoted rigorous growth of the human liver bud organoid in culture by selectively amplifying self-renewing bi-potent hepatic progenitor cells. These results highlight a previously underappreciated role of branched-chain amino acid metabolism in regulating mouse and human liver bud growth that can be modulated by maternal nutrition in vivo or cultural supplement in vitro.

show abstract

“…Forty-nine multiparous Nellore cows with average initial body weight of 451 ± 10 kg, age of 5.6 ± 0.5 years and body condition score of 4.4 ± 0.2 (1 to 9 scale) were used. Cattle used in the present study were from an experiment reported by Duarte et al [ 15 ]. From the initial 49 cows, 32 were randomly separated and hand mated with Nellore bulls to form the pregnant group.…”

Section: Methodsmentioning

confidence: 99%

Achieving Body Weight Adjustments for Feeding Status and Pregnant or Non-Pregnant Condition in Beef Cows

et al. 2015

View full text Add to dashboard Cite

BackgroundBeef cows herd accounts for 70% of the total energy used in the beef production system. However, there are still limited studies regarding improvement of production efficiency in this category, mainly in developing countries and in tropical areas. One of the limiting factors is the difficulty to obtain reliable estimates of weight variation in mature cows. This occurs due to the interaction of weight of maternal tissues with specific physiological stages such as pregnancy. Moreover, variation in gastrointestinal contents due to feeding status in ruminant animals is a major source of error in body weight measurements.ObjectivesDevelop approaches to estimate the individual proportion of weight from maternal tissues and from gestation in pregnant cows, adjusting for feeding status and stage of gestation.Methods and FindingsDataset of 49 multiparous non-lactating Nellore cows (32 pregnant and 17 non-pregnant) were used. To establish the relationships between the body weight, depending on the feeding status of pregnant and non-pregnant cows as a function of days of pregnancy, a set of general equations was tested, based on theoretical suppositions. We proposed the concept of pregnant compound (PREG), which represents the weight that is genuinely related to pregnancy. The PREG includes the gravid uterus minus the non-pregnant uterus plus the accretion in udder related to pregnancy. There was no accretion in udder weight up to 238 days of pregnancy. By subtracting the PREG from live weight of a pregnant cow, we obtained estimates of the weight of only maternal tissues in pregnant cows. Non-linear functions were adjusted to estimate the relationship between fasted, non-fasted and empty body weight, for pregnant and non-pregnant cows.ConclusionsOur results allow for estimating the actual live weight of pregnant cows and their body constituents, and subsequent comparison as a function of days of gestation and feeding status.

show abstract

Effects of pregnancy and feeding level on carcass and meat quality traits of Nellore cows

Cited by 10 publications

References 33 publications

Relationships Between Cull Beef Cow Characteristics, Finishing Practices and Meat Quality Traits of Longissimus thoracis and Rectus abdominis

Relationships Between Cull Beef Cow Characteristics, Finishing Practices and Meat Quality Traits of Longissimus thoracis and Rectus abdominis

Nutritional modulation of mouse and human liver bud growth through a branched-amino acid metabolism

Achieving Body Weight Adjustments for Feeding Status and Pregnant or Non-Pregnant Condition in Beef Cows

Contact Info

Product

Resources

About